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MP3425 Datasheet Preview

MP3425 Datasheet

55V Boost Converter

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The Future of Analog IC Technology
MP3425
3A, 55V Boost Converter with
Programmable Switching Frequency
and UVLO
DESCRIPTION
The MP3425 is a current mode step-up
converter with a 3.5A, 90minternal switch to
provide a highly efficient regulator with fast
response. The MP3425 features a programmed
frequency up to 2MHz allowing for easy filtering
and low noise. An external compensation pin
gives the user flexibility in setting loop
dynamics, and operates with small, low-ESR
ceramic output capacitors. Soft-start results in
small inrush current and can be programmed
with an external capacitor. The MP3425
operates from an input voltage as low as 3.1V
and can generate 48V at up to 350mA from a
12V supply.
The MP3425 includes under-voltage lockout,
current limiting and thermal overload protection
to prevent damage in the event of an output
overload. The MP3425 is available in a low
profile 14-pin 3x4mm QFN package with
exposed pad.
FEATURES
3.5A, 90m, 55V Power MOSFET
Uses Tiny Capacitors and Inductors
Wide input range: 3.1V to 22V
Output Voltage as High as 55V
Programmable Fsw: 300kHz – 2 MHz
Programmable UVLO, Soft-Start, UVLO
Hysteresis
Micropower shutdown <1μA
Thermal Shutdown 160 C
Available in 14-Pin 3x4mm QFN Package
APPLICATIONS
Telecom – Power Supply
Audio - Microphone and Tuner Bias
Automotive
All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. For
MPS green status, please visit MPS website under Quality Assurance.
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks
of Monolithic Power Systems, Inc.
TYPICAL APPLICATION
VIN 0805
100V
D1
50V, 3A
VOUT
R1
100k
U1
2 EN
14
12
FSET
SS
MP3425
R4 R5
51k 150k
C5
33nF
VDD 7
13
FB
COMP 1
C2
33nF
R6
20k
C7
3.3nF
R2
383k
R3
10k
MP3425 Rev.1.1
4/29/2016
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
1




MPS

MP3425 Datasheet Preview

MP3425 Datasheet

55V Boost Converter

No Preview Available !

MP3425- 3A, 55V BOOST CONVERTER WITH PROGRAMMABLE SWITCHING FREQUENCY AND UVLO
Part Number*
MP3425DL
ORDERING INFORMATION
Package
QFN-14 (3mmx4mm)
Top Marking
3425
Free Air Temperature (TA)
-40C to +85C
* For Tape & Reel, add suffix –Z (e.g. MP3425DL–Z);
For RoHS compliant packaging, add suffix –LF (e.g. MP3425DL–LF–Z)
PACKAGE REFERENCE
TOP VIEW
COMP 1
EN 2
VIN 3
SW 4
SW 5
SW 6
VDD 7
EXPOSED PAD
14 FSET
13 FB
12 SS
11 AGND
10 PGND
9 PGND
8 PGND
QFN-14 (3mmx4mm)
ABSOLUTE MAXIMUM RATINGS (1)
SW ..........................-0.5V(-3V for 10ns) to +55V
IN ................................................-0.5V to +22V
All Other Pins ...............................-0.3V to +6.5V
Continuous Power Dissipation (TA = +25°C) (2)
QFN14 ....................................................... 2.5W
Junction Temperature ...............................150C
Lead Temperature ....................................260C
Storage Temperature............... -65C to +150C
Recommended Operating Conditions (3)
Supply Voltage VIN ...........................3.1V to 22V
Output Voltage VOUT.........................3.1V to 55V
Operating Junct. Temp (TJ)..... - 40C to +125C
Thermal Resistance
θJA θJC
QFN-14 (3mmx4mm) ..............50 ...... 12 ... C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature TJ(MAX), the junction-to-
ambient thermal resistance θJA, and the ambient temperature
TA. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by PD(MAX)=(TJ(MAX)-
TA)/θJA. Exceeding the maximum allowable power dissipation
will cause excessive die temperature, and the regulator will go
into thermal shutdown. Internal thermal shutdown circuitry
protects the device from permanent damage.
3) The device is not guaranteed to function outside of its
operating conditions.
MP3425 Rev.1.1
4/29/2016
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
2


Part Number MP3425
Description 55V Boost Converter
Maker MPS
Total Page 13 Pages
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